ignition misfire under load
 

been battling this engine misfire issue for quite some time now. got it tuned real good, the afr and timing are real conservative. played with trigger filters and most any setting there and still cuts out/misfires up top. i got a datalog of it on the dyno for you smart guys to look over and see if i missed something. btw i datalogged trigger and it showed nice and linear.

s4 t2 rx7
haltech sport 1000
aem IGN-1A coils
fd rotors
45psi base fuel pressure
e98 fuel
gt40 turbo currently at 17 psi
an -8 fuel hose
aeromotive a1000 fuel pump
3 in intercooler system
3.5 exhaust
4 - ID2000 injectors

if you need the csv file of the log lmk and i can email it to you.

Already figured it out :)

and what was the problem?

Since it was his 6 hundred and 66th post,it appears he got possessed by the Devil and can't type any answer.It is Satanic law that he is forbidden to help Rotary owners,as everyone knows that The Devil owns a Honda!..LOL!

Lol didn't notice that haha crazy...well guess it didn't fix it. Previously ran an e6k with stock coils made 513 hp no issue. I run this new sport 1000 & sprint re and aem coils and I have nothing but ignition cutout issues from day one. Not very impressed... can anybody shed some light on this nightmare?

are the coils grounded to the block? swap a set of FC coils in and see what happens. what AFR? can you send me the csv file?

Yeah the coil grounds are on the same rotor housings the spark plugs are on. The other power and grounds are to strong reliable sources. Air fuels are in the mid 11s consistantly under boost. After a lot of dyno test runs I'm suspecting spark blowout. I'm ordering a set of R6725-10 ngks. I have a few suspicions and want to see if this works before I explain why i suspected this. Ill keep ya posted

Im having the same issue but im running E6X...

Free Rev its fine unload .. Misfire like crazy..

IDK what to do.. Im just gonna go back to factory S5 coils for now.. worked great with them..

I have battled with misfire/ hesitation in the past. The famous 5500 rpm misfire while using the EMS Stinger EMS was solved by changing the vac source to the map sensor to a different place ion the UIM. A very unlikely soultion, but this is what cured the prob after trying everything else. On my E8 I had an intermittent 7000+ rpm stumble and this was solved by adjusting the home filter.

increase the dwell ? move to a plug you can gap tune?

agreed, spark plug gap is the most over looked thing....

Fixed the problem 100% those of u who said spark plug were right. Went with a gappable plug from banzai racing completely fixed the problem.